Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Apex Treasury Corp

CIK 0002079253APXTAPXTUAPXTW· quarter ending 2026-06-30

Shares outstanding

45,960,000

as of 2026-08-10 · 10-Q cover page, filed 2026-08-11

Held by 13F filers

30,584,049

88.7% of Common Class A

Holders

+8 vs 2026-03-31 · 10 new, 2 exited

Value

$307.4M

shares +4.2% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-11, as of 2026-08-10)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common Class A	APXT · NASDAQ	34,470,000	30,584,049	88.7%	62	G04104108
Common Class B	not listed	11,490,000	—	—

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
G04104108	ORD SHS CL A	62	30,584,049	34,470,000	88.7%	$307.4M	—	13DG	holders →
G04104116	UNIT 10/07/2030not common	17	3,247,680	—	—	$33.4M	—	13DG	holders →
G04104124	*W EXP 10/07/203not common	44	12,425,207 $906K principal	—	—	$4.7M	1 call / 0 put	NPORT	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (62 of 62 · G04104108)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	ADAGE CAPITAL PARTNERS GP, L.L.C.	2,250,000	6.53%	$22.6M	—
2	HIGHBRIDGE CAPITAL MANAGEMENT LLC	1,802,773	5.23%	$18.1M	NEW
3	Hudson Bay Capital Management LP	1,501,160	4.35%	$15.1M	—
4	WOLVERINE ASSET MANAGEMENT LLC	1,425,998	4.14%	$14.3M	+439,542 (+44.6%)
5	GLAZER CAPITAL, LLC	1,401,165	4.06%	$14.1M	+197,163 (+16.4%)
6	Karpus Management, Inc.	1,253,557	3.64%	$12.6M	+90,000 (+7.7%)
7	Alberta Investment Management Corp	1,100,000	3.19%	$11.1M	NEW
8	D. E. Shaw & Co., Inc.	1,033,422	3.00%	$10.4M	—
9	Westchester Capital Management, LLC	1,000,000	2.90%	$10.1M	—
10	Lineage Point Capital LP	959,000	2.78%	$9.6M	—
11	Linden Advisors LP	850,000	2.47%	$8.5M	—
12	TENOR CAPITAL MANAGEMENT Co., L.P.	850,000	2.47%	$8.5M	—
13	Magnetar Financial LLC	850,000	2.47%	$8.5M	—
14	HighTower Advisors, LLC	813,150	2.36%	$8.2M	-143,500 (-15.0%)
15	AQR Arbitrage LLC	792,557	2.30%	$8.0M	+13,909 (+1.8%)
16	Polar Asset Management Partners Inc.	750,000	2.18%	$7.5M	—
17	Verition Fund Management LLC	690,000	2.00%	$6.9M	—
18	Radcliffe Capital Management, L.P.	675,000	1.96%	$6.8M	—
19	First Trust Capital Management L.P.	654,958	1.90%	$6.6M	—
20	Crossingbridge Advisors, LLC	625,000	1.81%	$6.3M	+150,000 (+31.6%)
21	MILLENNIUM MANAGEMENT LLC	616,356	1.79%	$6.2M	+14,755 (+2.5%)
22	Harraden Circle Investments, LLC	600,000	1.74%	$6.0M	NEW
23	ARISTEIA CAPITAL, L.L.C.	550,000	1.60%	$5.5M	—
24	TWO SIGMA INVESTMENTS, LP	543,750	1.58%	$5.5M	—
25	Meteora Capital, LLC	536,231	1.56%	$5.4M	-2,153,212 (-80.1%)
26	PICTON MAHONEY ASSET MANAGEMENT	500,000	1.45%	$5.0M	—
27	Wealthspring Capital LLC	491,890	1.43%	$4.9M	-2,260 (-0.5%)
28	Centiva Capital, LP	435,886	1.26%	$4.4M	+120,781 (+38.3%)
29	Shaolin Capital Management LLC	406,692	1.18%	$4.1M	-167,365 (-29.2%)
30	MOORE CAPITAL MANAGEMENT, LP	400,000	1.16%	$4.0M	—
31	COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	400,000	1.16%	$4.0M	—
32	Periscope Capital Inc.	375,000	1.09%	$3.8M	—
33	SONA ASSET MANAGEMENT (US) LLC	342,422	0.99%	$3.4M	—
34	RLH Capital LLC	300,000	0.87%	$3.0M	NEW
35	Governors Lane LP	300,000	0.87%	$3.0M	—
36	WHITEBOX ADVISORS LLC	300,000	0.87%	$3.0M	—
37	MIZUHO SECURITIES USA LLC	257,110	0.75%	$2.6M	NEW
38	RIVERNORTH CAPITAL MANAGEMENT, LLC	251,464	0.73%	$2.5M	—
39	BNP PARIBAS FINANCIAL MARKETS	220,274	0.64%	$2.2M	—
40	Quarry LP	200,000	0.58%	$2.0M	NEW
41	Parallax Volatility Advisers, L.P.	175,047	0.51%	$1.8M	-61,118 (-25.9%)
42	Context Capital Management, LLC	149,800	0.43%	$1.5M	—
43	DLD Asset Management, LP	125,000	0.36%	$1.3M	—
44	Schonfeld Strategic Advisors LLC	115,000	0.33%	$1.2M	+15,000 (+15.0%)
45	Mint Tower Capital Management B.V.	100,000	0.29%	$1.0M	—
46	O'Connor Alternative Investments LLC	100,000	0.29%	$1.0M	—
47	Dakota Wealth Management	86,300	0.25%	$867K	—
48	Clear Street Group Inc.	70,202	0.20%	$706K	-10,627 (-13.1%)
49	Logan Stone Capital, LLC	63,121	0.18%	$634K	NEW
50	Kepos Capital LP	51,573	0.15%	$518K	—
51	GRITSTONE ASSET MANAGEMENT LLC	50,000	0.15%	$503K	—
52	TORONTO DOMINION BANK	37,900	0.11%	$381K	-577,610 (-93.8%)
53	ROBINSON CAPITAL MANAGEMENT, LLC	27,000	0.08%	$271K	+15,000 (+125.0%)
54	Virtu Financial LLC	26,090	0.08%	$262K	-104,823 (-80.1%)
55	HEIGHTS CAPITAL MANAGEMENT, INC	25,000	0.07%	$251K	—
56	ABC ARBITRAGE SA	20,000	0.06%	$201K	—
57	Rangeley Capital, LLC	17,701	0.05%	$178K	NEW
58	GEODE CAPITAL MANAGEMENT, LLC	16,602	0.05%	$167K	—
59	JPMORGAN CHASE & CO	15,662	0.05%	$157K	NEW
60	UBS Group AG	5,470	0.02%	$55K	—
61	Arax Advisory Partners	1,740	0.01%	$17K	NEW
62	MORGAN STANLEY	26	0.00%	$261	-30 (-53.6%)

Exited since 2026-03-31 (2 filers; largest 2 shown)

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	−850,000
Saba Capital Management, L.P.	−115,118

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
Highbridge Capital Management, LLC	SCHEDULE 13G	2026-08-14	2026-06-30	1,575,680	4.6%
Meteora Capital, LLC	SCHEDULE 13G/A	2026-08-14	2026-06-30	536,231	1.56%
Harraden Circle Investors, LP	SCHEDULE 13G/A	2026-02-13	2025-12-31	0	0%
Harraden Circle Special Opportunities, LP	SCHEDULE 13G/A	2026-02-13	2025-12-31	0	0%
Harraden Circle Concentrated, LP	SCHEDULE 13G/A	2026-02-13	2025-12-31	0	0%
Harraden Circle Investments, LLC	SCHEDULE 13G/A	2026-02-13	2025-12-31	0	0%
Harraden Circle Investors GP, LLC	SCHEDULE 13G/A	2026-02-13	2025-12-31	0	0%
Harraden Circle Investors GP, LP	SCHEDULE 13G/A	2026-02-13	2025-12-31	0	0%
Harraden Circle Strategic Investments, LP	SCHEDULE 13G/A	2026-02-13	2025-12-31	0	0%
Frederick V. Fortmiller, Jr.	SCHEDULE 13G/A	2026-02-13	2025-12-31	0	0%
Adage Capital Management, L.P.	SCHEDULE 13G	2026-02-12	2025-12-31	2,250,000	6.53%
Phillip Gross	SCHEDULE 13G	2026-02-12	2025-12-31	2,250,000	6.53%
Robert Atchinson	SCHEDULE 13G	2026-02-12	2025-12-31	2,250,000	6.53%
Apex Treasury Sponsor LLC	SCHEDULE 13G	2026-02-05	2025-10-27	11,150,000	24.3%
Hugh Cochrane	SCHEDULE 13G	2026-02-05	2025-10-27	11,150,000	24.3%
Ajmal Rahman	SCHEDULE 13G	2026-02-05	2025-10-27	11,150,000	24.3%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.